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• Uploading videos on rails website

  16 mai 2017, par Dinukaperera

  I am trying to let my users upload videos on my website(not deployed yet, testing locally). I have it set up in a manner where if the "user information" gets saved, it will take them to the "root_path", which is the homepage. If the user information is not saved, it will render the form again. Before I added the video upload feature, all the information got saved and everything worked well, but after adding the feature, it keeps rendering the same form over and over again since the information is not getting saved. How do I check what’s wrong ? The command line gives me this error :

  The user information form partial :
  `

  <%= simple_form_for @userinfo do |f| %>
  
    <%= f.input :name, label: 'Full name', error: 'Full name is mandatory' %>
  
    <%= f.input :username, label: 'Username', error: 'Username is mandatory, please specify one' %>
  
    <%= f.input :school, label: 'Name of college' %>
  
    <%= f.input :gpa, label: 'Enter GPA' %>
  
    <%= f.input :email, label: 'Enter email address' %>
  
    <%= f.input :number, label: 'Phone number' %>
  
    <%= f.file_field :video %>
  
    <%= f.button :submit %>
  
  <% end %>

  `

  My user controller (This is the user information controller, does not control user email and password. I’m using the devise gem for user sign in, sign out, and sign up) :`

  class UsersController < ApplicationController
  
      def index
  
      end
  
  
  
      def show
  
      end
  
  
  
      def new
  
          @userinfo = User.new
  
      end
  
  
  
      def create
  
          @userinfo = User.new(user_params)
  
          if @userinfo.save
  
            redirect_to root_path
  
          else
  
            render 'new'
  
          end
  
      end
  
  
  
      def edit
  
      end
  
  
  
      def update
  
      end
  
  
  
      def destroy
  
      end
  
  
  
      private
  
          def user_params
  
              params.require(:user).permit(:name, :username, :email, :number, :school, :gpa, :major, :video)
  
          end
  
  end

  `

  This is the user model (usermain is the model related to user password and email. The user information in the user model belongs to the usermain) : `

  class User < ActiveRecord::Base
  
      belongs_to :usermain
  
  
  
      has_attached_file :video, styles: {:video_show => {:geometry => "640x480",:format => 'mp4'},:video_index => { :geometry => "160x120", :format => 'jpeg', :time => 10}}, :processors => [:transcoder]
  
      validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
  
  end

  `

  This is the migration file that creates the user information table :`

  class CreateUsers < ActiveRecord::Migration
  
    def change
  
      create_table :users do |t|
  
        t.string :name
  
        t.string :username
  
        t.string :email
  
        t.string :number
  
        t.string :school
  
        t.string :gpa
  
        t.string :major
  
  
  
        t.timestamps null: false
  
      end
  
    end
  
  end

  This is adding the "video" field to the above created user information table:

  class AddAttachmentVideoToUsers < ActiveRecord::Migration
  
    def self.up
  
      change_table :users do |t|
  
        t.attachment :video
  
      end
  
    end
  
  
  
    def self.down
  
      remove_attachment :users, :video
  
    end
  
  end

  `

  I also have paperclip and ffmpeg installed. When I say installed, it’s literally just that. I’m not sure if I have to manipulate paperclip or ffmpeg in any way to make it work with the videos, I have just installed and did nothing else with them. I have been pulling my hair out for the past two days. Any help is appreciated.

• error : `FFMPEG` can not read `` in google colab

  3 avril 2023, par 5opka

  the error occurs when loading a video file (mp4) previously the code worked with this video.
to run https://colab.research.google.com/github/AliaksandrSiarohin/first-order-model/blob/master/demo.ipynb
you need to put !pip install -U scikit-image==0.18.0 in the first cell.
video can download this https://youtu.be/smQvWpqX13I (144p).


  


  InitializationError         Traceback (most recent call last)&#xA;/usr/local/lib/python3.9/dist-packages/imageio/core/imopen.py &#xA;in imopen(uri, io_mode, plugin, extension, format_hint, &#xA;legacy_mode, **kwargs)&#xA;    141         try:&#xA;--> 142             return loader(request, **kwargs)&#xA;    143         except InitializationError as class_specific:&#xA;    &#xA;20 frames&#xA;    &#xA;InitializationError: `FFMPEG` can not read `<bytes>`.&#xA;&#xA;The above exception was the direct cause of the following &#xA;exception:&#xA;&#xA;RuntimeError           Traceback (most recent call last)&#xA;/usr/local/lib/python3.9/dist-packages/imageio/core/imopen.py &#xA;in imopen(uri, io_mode, plugin, extension, format_hint, &#xA;legacy_mode, **kwargs)&#xA;    158 &#xA;    159         request.finish()&#xA;--> 160         raise err_type(err_msg) from err_from&#xA;    161 &#xA;    162     # fast-path based on format_hint&#xA;&#xA;RuntimeError: `FFMPEG` can not handle the given uri.&#xA;</bytes>

  


• ffmpeg fails to load lensfun database

  5 février 2024, par filibis

  I'm trying to correct lens distortion of a video.

  


  I use below code that I took from here : https://ffmpeg.org/ffmpeg-all.html#Examples-132
(I just change the input and output file paths).

  


  ffmpeg -i input.mov -vf lensfun=make=Canon:model="Canon EOS 100D":lens_model="Canon EF-S 18-55mm f/3.5-5.6 IS STM":focal_length=18:aperture=8 -c:v h264 -b:v 8000k output.mov


  


  But I get this error :

  


  [Parsed_lensfun_0 @ 000002a85a0f7ac0] Failed to load lensfun database from default path
[AVFilterGraph @ 000002a8638fa880] Error initializing filters
Error reinitializing filters!
Failed to inject frame into filter network: Invalid data found when processing input
Error while processing the decoded data for stream #0:0
Conversion failed!


  


  How can I resolve this issue ?

  


  I tried to give full path with db_path command as seen below :

  


  ffmpeg -i input.mov -vf lensfun=make=Canon:model="Canon EOS 100D":lens_model="Canon EF-S 18-55mm f/3.5-5.6 IS STM":focal_length=18:aperture=8:db_path=E:\lensfun-master\data\db\slr-canon.xml -c:v h264 -b:v 8000k output.mov


  


  And I get this similar error :

  


  [Parsed_lensfun_0 @ 0000020b955cb7c0] Failed to load lensfun database from E path
[AVFilterGraph @ 0000020b94e2e9c0] Error initializing filters
Error reinitializing filters!
Failed to inject frame into filter network: Invalid data found when processing input
Error while processing the decoded data for stream #0:0
Conversion failed!


  


  Am I doing something wrong ?